Tang Capital Management’s OmniAb OABI Stock Holding History

Tang Capital Management’s Portfolio OABI Stock Details OABI Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	–	Sell	-300,000	Closed	-$480K	–	156
2025 Q3	$480K	Hold	300,000	–	–	0.02%	178
2025 Q2	$522K	Hold	300,000	–	–	0.03%	186
2025 Q1	$720K	Hold	300,000	–	–	0.04%	173
2024 Q4	$1.06M	Hold	300,000	–	–	0.07%	142
2024 Q3	$1.27M	Hold	300,000	–	–	0.09%	104
2024 Q2	$1.13M	Buy	+300,000	New	+$1.37M	0.11%	90

Other funds holding OABI

WCM

Whitefort Capital Management New York $339M AUM 52.48% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

CCM

Cadian Capital Management New York $821M AUM 14.36% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

PMG

Private Management Group Irvine, California $3.47B AUM 13.39% 1-Year Est. Return

RHJA

Rice Hall James & Associates San Diego, California $1.8B AUM 36.16% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

TowerView LLC New York $155M AUM 30.14% 1-Year Est. Return

Tang Capital Management's OABI Position: Q4 2025 in Review

Tang Capital Management sold out of OmniAb (OABI) in Q4 2025, closing a stake of 300,000 shares — an estimated $480K sold.

Tang Capital Management first reported a position in OABI in Q2 2024 and held it in 6 quarters. The position peaked at $1.27M in Q3 2024. 129 funds tracked by Wall St. Rank hold OABI as of Q4 2025.

Tang Capital Management reported no remaining OmniAb position as of Q4 2025 after selling out during the quarter.
Tang Capital Management sold 300,000 OmniAb shares in Q4 2025, an estimated $480K.
Tang Capital Management first reported a position in OmniAb in Q2 2024 and held it in 6 quarters.
Tang Capital Management's OmniAb position peaked at $1.27M in Q3 2024.
129 funds tracked by Wall St. Rank held OmniAb as of Q4 2025.

Based on Tang Capital Management's 13F filing for Q4 2025, filed 17 Feb 2026.